Form Finding of Shell Bridges Using the Pneumatic Forming of Hardened Concrete Construction Principle

Figure 3

Work steps for the construction of the deer overpass: (1) manufacturing of the foundations; (2) production of the flat working surface out of concrete (the tension plate for the building condition); (3) concreting of the flat concrete plate for the transformation process (thickness 100 m, weight 546 t); (4) transformation of the initially flat hardened concrete plate to the designed shell; (5)–(8) production of the additional reinforced concrete in layers (total thickness 350 mm); (9) cutting out of the portals; (10) production of the edge beam; (11) production of the earth back filling [18].